Currently is car
Distance: 15 miles (uphill in the morning).
Car time: 0:30-1:00
Bike time: 1:20 to 1:35 (Using mountain bike with double suspension, uphill)
Public transport: 1:30-1-50

I am planning on getting an inexpensive road bike (training, touring, and maybe commuting).
After I get I will at least commute with bike once a week. If I get times in 0:45 to 1:00 uphill after I get it, I may end up using it most of the days.